btrfs: remove the zoned/zone_size union in struct btrfs_fs_info

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Reading a value from a different member of a union is not just a great
way to obfuscate code, but also creates an aliasing violation.  Switch
btrfs_is_zoned to look at ->zone_size and remove the union.

Note: union was to simplify the detection of zoned filesystem but now
this is wrapped behind btrfs_is_zoned so we can drop the union.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note ]
Signed-off-by: David Sterba <dsterba@suse.com>

...

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Christoph Hellwig 2022-03-24 17:52:09 +01:00 • committed by David Sterba

parent 8aa1e49ea1

commit 8e010b3d70

1 changed files with 2 additions and 5 deletions

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7

fs/btrfs/ctree.h

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